i don't know that i'll always agree with this. there's a chance it could be very small caterpillars too. also, i think the color of the aphid depends upon what they are eating, so i imagine the color of them squashed would also be variable.
Thanks everyone! The plant was rinsed and roots soaked with water, sprayed with rubbing alcohol,and repotted Sunday! Yesterday,got myself a magnifying glass so I can be more vigilant.